Collette and Reno join a stellar cast that includes Simon Pegg, who will play Hector, an eccentric London psychiatrist in crisis; Rosamund Pike; Stellan Skarsgård; Christopher Plummer; Desiree Zurowski; and Jakob Davies. Chelsom and Tinker Lindsay wrote the screenplay, adapted from the novel of the same name by Francis Lelord. The film is produced by Judy Tossell for Egoli Tossell Film and Christine Haebler for Screen Siren Pictures. Jens Meurer and Trish Dolman are serving as executive producers.

Collette is repped by WME, Reno by ICM Partners. UTA is representing U.S. rights and The Solution is handling worldwide rights to the Germany-Canada co-production. Chelsom is repped by Principato Young and UTA.